From: Chris Wright <chrisw@osdl.org>
To: linux-kernel@vger.kernel.org, stable@kernel.org
Cc: Justin Forbes <jmforbes@linuxtx.org>,
Zwane Mwaikambo <zwane@arm.linux.org.uk>,
"Theodore Ts'o" <tytso@mit.edu>,
Randy Dunlap <rdunlap@xenotime.net>,
Chuck Wolber <chuckw@quantumlinux.com>,
torvalds@osdl.org, akpm@osdl.org, alan@lxorguk.ukuu.org.uk,
ak@suse.de
Subject: [patch 05/09] x86_64: Fix ptrace boundary check
Date: Wed, 8 Jun 2005 17:08:11 -0700 [thread overview]
Message-ID: <20050609000811.GL13152@shell0.pdx.osdl.net> (raw)
In-Reply-To: <20050608234637.GG13152@shell0.pdx.osdl.net>
Don't allow accesses below register frame in ptrace
There was a "off by one quad word" error in there.
Found and fixed by John Blackwood
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Chris Wright <chrisw@osdl.org>
arch/x86_64/kernel/ptrace.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
Index: release-2.6.11/arch/x86_64/kernel/ptrace.c
===================================================================
--- release-2.6.11.orig/arch/x86_64/kernel/ptrace.c
+++ release-2.6.11/arch/x86_64/kernel/ptrace.c
@@ -252,7 +252,7 @@ asmlinkage long sys_ptrace(long request,
break;
switch (addr) {
- case 0 ... sizeof(struct user_regs_struct):
+ case 0 ... sizeof(struct user_regs_struct) - sizeof(long):
tmp = getreg(child, addr);
break;
case offsetof(struct user, u_debugreg[0]):
@@ -297,7 +297,7 @@ asmlinkage long sys_ptrace(long request,
break;
switch (addr) {
- case 0 ... sizeof(struct user_regs_struct):
+ case 0 ... sizeof(struct user_regs_struct) - sizeof(long):
ret = putreg(child, addr, data);
break;
/* Disallows to set a breakpoint into the vsyscall */
next prev parent reply other threads:[~2005-06-09 0:23 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-08 23:46 [00/09] -stable review Chris Wright
2005-06-08 23:52 ` [patch 01/09] try_to_unmap_cluster() passes out-of-bounds pte to pte_unmap() Chris Wright
2005-06-08 23:55 ` [patch 02/09] [NETFILTER]: Fix deadlock with ip_queue and tcp local input path Chris Wright
2005-06-09 0:00 ` [patch 03/09] fix hfsplus oops, hfs and hfsplus leak Chris Wright
2005-06-09 0:04 ` [patch 04/09] x86_64: avoid SMP boot up race Chris Wright
2005-09-14 3:13 ` Horms
2005-09-14 6:29 ` Chris Wright
2005-06-09 0:08 ` Chris Wright [this message]
2005-06-09 0:14 ` [patch 06/09] Fix for bttv driver (v0.9.15) for Leadtek WinFast VC100 XP capture cards Chris Wright
2005-06-09 0:18 ` [patch 07/09] ext3: fix log_do_checkpoint() assertion failure Chris Wright
2005-06-09 0:21 ` [patch 08/09] [BRIDGE]: prevent bad forwarding table updates Chris Wright
2005-06-09 0:24 ` [patch 09/09] [PKT_SCHED]: netem: duplication fix Chris Wright
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